/**
 * IK 中文分词  版本 5.0.1
 * IK Analyzer release 5.0.1
 * <p>
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * <p>
 * 源代码由林良益(linliangyi2005@gmail.com)提供
 * 版权声明 2012，乌龙茶工作室
 * provided by Linliangyi and copyright 2012 by Oolong studio
 */
package org.wltea.analyzer.sample;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
import org.wltea.analyzer.lucene.IKAnalyzer;

import java.io.IOException;
import java.io.StringReader;

/**
 * 使用IKAnalyzer进行分词的演示
 * 2012-10-22
 *
 */
public class IKAnalzyerDemo {

    public static void main(String[] args) {
        //构建IK分词器，使用smart分词模式
        Analyzer analyzer = new IKAnalyzer(false, true, false);

        //获取Lucene的TokenStream对象
        TokenStream ts = null;
        try {
            ts = analyzer.tokenStream("myfield", new StringReader("123456 我是中国人 IK Analyzer是一个结合词典分词和文法分词的中文分词开源工具包。它使用了全新的正向迭代最细粒度切分算法。"));
            //获取词元位置属性
            OffsetAttribute offset = ts.addAttribute(OffsetAttribute.class);
            //获取词元文本属性
            CharTermAttribute term = ts.addAttribute(CharTermAttribute.class);
            //获取词元文本属性
            TypeAttribute type = ts.addAttribute(TypeAttribute.class);
            PositionIncrementAttribute pos = ts.addAttribute(PositionIncrementAttribute.class);

            //重置TokenStream（重置StringReader）
            ts.reset();
            //迭代获取分词结果
            while (ts.incrementToken()) {
                System.out.println(offset.startOffset() + " - " + offset.endOffset() + " : " + pos.getPositionIncrement() + " | " + term.toString() + " | " + type.type());
            }
            //关闭TokenStream（关闭StringReader）
            ts.end();   // Perform end-of-stream operations, e.g. set the final offset.

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            //释放TokenStream的所有资源
            if (ts != null) {
                try {
                    ts.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }

}
